How to / ios

How to sign a PDF on your iPhone and iPad

Easily sign documents on your iPhone and iPad with a native ‘Markup’ feature or with PDF Expert, the go-to PDF app awarded by Apple.

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How to sign a PDF on your iPhone and iPad

There are so many documents we need to sign: Contracts, invoices, tax declarations, project plans, and many more. Today we have various solutions to digitize the whole process of signing documents. If you're a proud Apple fan, PDF Expert provides the best signing experience out there. If you need to sign any document while you're traveling, download PDF Expert and you’ll be able to do it on the go from your iPhone or iPad.

Sign a PDF on your iPhone and iPad with no additional apps

  1. Open a PDF you need to sign on your iPhone or iPad.
  2. Tap on the Markup icon at the bottom of the screen.
  3. Tap on the Plus icon and choose the ‘Signature’ option.


  1. Draw your signature with your finger.
  2. Tap ‘Done’


  1. Place your signature where needed and tap ‘Done’ again. 

And just like that, you have a signed PDF document! 

Sign a PDF on your iPhone and iPad with Apple Books

You can also save your PDF to the Apple Books app and sign it there:

  1. Open PDF in the Books app.
  2. Touch the screen where you want to add the signature.
  3. Tap on the Markup icon at the top of the screen.
  4. Tap on the Plus icon and choose the ‘Signature’ option.
  5. Add your signature. 


If you need to sign and edit many PDFs, it is better to use a more advanced solution, like PDF Expert. 

Simple steps to sign a PDF with PDF Expert

  1. Get PDF Expert for free.
  2. Open a document you want to sign by taping on the blue plus icon at the bottom.
  3. Select Fill & Sign on the top toolbar.
  4. Tap Signature .
  5. To add your own signature, tap Create New Signature.
  6. If you need another person to sign a PDF, select Customer Signature. This is a one-time signature that isn't saved in the app and can't be copied to other documents.
  7. Scribble your signature. You can select color and thickness on the top toolbar.
  8. Tap where you want to insert the signature.
  9. You can move and resize a signature in the document.

PDF Expert saves the signatures you create so the next time you'll be able to sign a PDF with just three taps!

Get PDF Expert

Sign PDFs across all your devices

PDF Expert works across iPhone, iPad, and Mac and syncs your signatures if you’re signed into the same iCloud account on all devices. So you can easily create a beautiful signature with the Apple Pencil on your iPad and use it on your Mac later.

Great signing tools together with powerful editing features and an effortless-to-use design make PDF Expert the go-to PDF app for iPhone, iPad, and Mac.

Download PDF Expert from the App Store now!